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Contractor 28
Engineering Inside IR35 Chelmsford

28 jobs found in Chelmsford

CL
Jul 02, 2026  
Principal Electronics Engineer
Principal Electronics Engineer Location: Basildon - onsite Duration: 6 months Rate: £73.39 p/h (Umbrella) IR35: Inside Clearance: UK Eyes Only - SC (BPSS to start) Overview We're recruiting for a highly skilled Electronics Engineer to join a multi-disciplinary team within a Precision Guidance environment. The role requires broad, extensive electronic knowledge across both digital and analogue domains, plus the ability to drive design reviews and take designs through verification into production. Responsibilities: * Requirements capture, schematic capture and PCB layout (DxDesigner & Expedition - Siemens EDA) * Circuit simulation * Drive the design review process, collaborating with other engineering functions and manufacturing * Devise and implement design verification tests and supporting documentation to transition designs into production * Design solutions considering product quality, safety, reliability and testability * Present robust engineering solutions at design...
IR35 Status:
Inside IR35

CV-Library Basildon, Essex Contractor
CL
Jun 25, 2026  
Mechanical Supervisor
Job Title: Mechanical Supervisor Location: Beckton Rate: £450 per day (Inside IR35 Umbrella PAYE) Duration: 12 months+ Sector: Water / Wastewater The Company We are working in partnership with a leading Tier 1 Water/Wastewater contractor, delivering large capital delivery schemes on behalf of Thames Water. With multiple live projects across clean water sites, they are looking to strengthen their delivery team with the appointment of an experienced Mechanical Supervisor. The Role As a Mechanical Supervisor, you will play a key role in the successful delivery of mechanical packages across major water infrastructure projects. You will oversee site activities, ensuring compliance with safety, quality, and programme targets, while supervising both directly employed staff and subcontractors. Key Responsibilities ·Supervise and coordinate mechanical works, including pipework fabrication, welding, and inspection. ·Review and interpret P&IDs and GA drawings to support...
IR35 Status:
Inside IR35

CV-Library Beckton, London, UK Contractor
CL
Jun 27, 2026  
Interim Buyer - Projects
Role: Buyer – Projects Location: Greenwich Rate: £40–£45 per hour (Inside IR35) Start Date: ASAP Duration: Initial 6 months (extension subject to project demand) Determination: Inside IR35 Company Overview Our client operates within a large-scale industrial environment, delivering complex infrastructure and capital projects across the UK and internationally. With a strong focus on operational excellence, procurement plays a critical role in ensuring projects are delivered on time, within budget, and to the highest quality standards. The Role We are seeking an experienced Buyer with a strong background in project-based procurement to support ongoing and upcoming projects. This role will involve sourcing and managing suppliers, negotiating contracts, and ensuring continuity of supply for key goods and services. You will work closely with internal stakeholders and external suppliers to deliver value-driven procurement solutions across multiple projects. Key Responsibilities *...
IR35 Status:
Inside IR35

CV-Library Greenwich, Greater London Contractor
CL
Jul 01, 2026  
Contract Senior Structural Engineer
Contract Senior Structural Engineer London Immediate Start Inside IR35 Up to c£50 p/h (experience dependant)   Contract Senior Structural Engineer   A leading firm of Consulting Engineers with multiple office UK wide are looking to hire a Contract Senior Structural Engineer for a 12 month role to start immediately.   The role will involve surveys, inspection, carrying out building safety reports and general defect surveys.   Due to an increased workload our client is looking for the right individual to start immediately.  All applicants must have a minimum of 5 years’ experience plus.   Chartership or close to being chartered would be advantageous.   Hybrid working conditions can be offered with 3 days in the office and 2 from home.  All applicants must live within easy commuting distance of Central London.   On offer is an hourly rate up to c£50 p/h for the right individual based on an Inside IR35 assignment.   Immediate start.   For more details on this role please contact Nick...
IR35 Status:
Inside IR35

CV-Library Sidcup, UK Contractor
CL
Jul 02, 2026  
Metal Worker-Senior Trimmer
Metal worker CONTRACTORS REQUIRED. Role is Inside IR35. Contractors DO NOT apply if you're noting willing to work Umbrella Inside IR35. Metal workers required with extensive experience in metal trimming and polishing operations, ideally within an precision engineering or regulated manufacturing environment. 37.5 hour standard week, potential for 10 hours additional overtime Role Purpose Responsible for ensuring all polishing and trimming operations are carried out safely, efficiently and to the required quality standard, supporting delivery to customer requirements and overall production targets. Key Duties and Responsibilities • Plan and organise work within the trimming area to meet customer demand and maximise throughput. • Ensure all scheduled production dates are achieved, proactively managing priorities to maintain flow. • Identify, communicate and escalate any expected or actual variations against schedule in a timely manner. • Set up and operate trimming and polishing...
IR35 Status:
Inside IR35

CV-Library Welwyn Garden City, UK Contractor
CL
Jul 02, 2026  
Workplace Technology Engineer
Pertemps Network Group are pleased to be partnering with a reputable housing provider in London to recruit an experienced Workplace Technology (Field Services) Engineer. Rate: £174 PAYE per day / £225 umbrella per day (Inside IR35) Contract: Interim Contract Working Pattern: Fully Site-Based (5 Days per Week) Location: Greater London This is an excellent opportunity for an experienced IT Support professional who enjoys working in a highly visible, customer-facing environment. As a Workplace Technology Engineer, you will be a key point of contact for end users, delivering high-quality technical support and ensuring staff have the technology, equipment and assistance they need to work effectively. The successful candidate will provide a mixture of desktop support, field services and end-user computing support, resolving technical issues, managing hardware deployments, supporting workplace technologies and contributing to ongoing IT projects and service improvements. Key...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 26, 2026  
Sub Agent
Experienced Sub Agent (Freelance) - London Civil Engineering Projects We are seeking a freelance Sub Agent with major civil project experience to join a highly regarded Tier 1 contractor. This is a long-term contract working on significant civil works, offering a stable and rewarding opportunity. Looking for candidates with rail, highways, utilties or aviation experience. If you'd like to secure a long-term freelance role with a top-tier contractor and a great team, this could be the role for you. This role is inside of IR35 so you will need to be Randstad PAYE or Umbrella PAYE. Roles and responsibilities: Joining a strong, collaborative team and working with an excellent client, you will be crucial to the early stages of our projects. Your key responsibilities will include: Creating detailed methodology and constructability reports Conducting and overseeing on-site surveys Contributing to the pre-construction process to ensure project success Collaborating closely with...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jun 25, 2026  
Contract Senior Civil Infrastructure Engineer
Contract Senior Civil Infrastructure Engineer London Immediate Start Long term contractc £50-55 p/h (Inside IR35)  Contract Senior Civil Infrastructure Engineer  A Global multi discipline engineering consultancy based in Central London is looking to hire multiple Senior Civil Infrastructure Engineers on a contract basis due to a number of significant project wins.  Our client has won a significant number of projects both in the UK and UAE and need expert help to deliver on these challenging and complex projects.  Successful applicants must have excellent Infodrainage, AutoCAD and Civil 3D experience and be used to working on projects of significant scale.  Previous experience of working on UAE projects would be a distinct advantage.   Successful applicants will have a minimum of 5-8 years relevant experience.  Any individual from a strong technical background in a core infrastructure disciplines such as Highways, Utilities or Sustainable Drainage would fit the role well....
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Jul 02, 2026  
Construction Project Manager
MERITUS are recruiting for a Construction & Facilities Project Manager to join a leading Defence Manufacturing organisation, delivering major infrastructure, construction, and facilities improvement projects across highly secure, regulated, and complex operational manufacturing environments. CONSTRUCTION & FACILITIES PROJECT MANAGER - DEFENCE MANUFACTURING - STEVENAGE - HYBRID (3 DYAS PER WEEK ONSITE) - 12 MONTH CONTRACT - UP TO £50 PER HOUR (INSIDE IR35) - SC ELIGIBILITY REQUIRED We're seeking an experienced Facilities Project Manager to lead the end-to-end delivery of capital construction and infrastructure projects within a defence manufacturing environment. This client-side role covers projects from feasibility and design through to construction, commissioning, and handover, ensuring minimal disruption to critical live operations. Working within a highly regulated defence manufacturing business, you will play a key role in delivering secure, compliant, and...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Jun 27, 2026  
Test Development Engineer
We are recruiting for a talented Hardware Design Engineer to join our client's Test Equipment Hardware Design Capability team on a 6-month contract. Part of the Test Equipment Centre of Excellence (TE CofEx), this team designs, integrates, and validates innovative test system hardware solutions that support products throughout their lifecycle. This is a fantastic opportunity to contribute to cutting-edge projects, ensure technical excellence, and help drive engineering success. Role: Test Development Engineer Pay: £50 per hour Via Umbrella Location: Stevenage Contract: Monday- Friday, 37 Hours per week, 6 Months Contract IR35 Status: Inside Security Clearance: SC Required however can start on BPSS Essential Responsibilities Prepare specifications & develop designs in line with all quality and technical standards. Develop proposals for investigations & solutions, following investigation and analysis of technical issues. Carry out design appraisals to ensure all...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Jun 20, 2026  
Mechanical Engineer – Certification & Validation
World Class Defence Organisation is currently looking to recruit a Mechanical Engineer – Certification & Validation subcontractor on an initial 6 month contract. Rate: £50.00 per hour Location: Stevenage Hybrid / Remote working: 2 days a week onsite, the rest working remotely from home. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Mechanical Engineer – Certification & Validation Job Description: An opportunity to become part of Europe’s No. 1 Missile Systems Designer, as a Mechanical Design Engineer. You will work closely with other functional teams, to develop products to meet our customer’s needs. Within this role you will have the opportunity to work as part of a multi-disciplinary team to work on the certification and validation activities to allow a new product to be delivered into...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 14, 2026  
Systems Design Engineer
World Class Defence Organisation is currently looking to recruit 2x Systems Design Engineer subcontractors on an initial 12 month contract.   Rate: £80.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: The role can be based either from the companies Stevenage, Bolton or Bristol sites Hybrid / Remote working: circa 4 days onsite (more remote working may be possible) Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   Systems Design Engineer Job Description: Seekers department develop RF Seekers for use in Missile products.  Responsibilities: Working as part of team developing system architecture and design utilising MBSE. Deriving and managing requirements Communicating with various stakeholders with the Seeker team and the external customer and suppliers Developing Physical...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 12, 2026  
Mechanical Design Draughtsperson
World Class Defence Organisation is currently looking to recruit a Mechanical Design Draughtsperson subcontractor on an initial 6 month contract. Rate: £45.00 per hour Location: Stevenage Hybrid / Remote working: 2 days a week likely onsite.  The rest working from home Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)  Mechanical Design Draughtsperson Job Description: An opportunity to become a member of Europe’s No. 1 Missile Systems company as a design draughtsperson in the mechanical engineering function, you will work closely with a wide range of project teams to develop definitions to meet our manufacturers and customer’s needs. Responsibilities: Must have a strong background in the ability to create 2D and 3D definitions. In this role, you will develop the 2D and 3D definitions working with the...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 07, 2026  
Mechanical Systems Engineer / Architect
World Class Defence Organisation is currently looking to recruit a number of Mechanical Systems Engineer / Architects on an initial 6 month contract.  The department can have the role based from either the Stevenage, Bristol or Bolton sites.   This role would suit a candidate who comes from a strong background of working as a Mechanical Design Engineer, Mechanical Systems Engineer, Mechanical Architect or has experience of Mechanical Systems Architecture.  A defence / aerospace background is ideal but not essential. DOORS experience would be great.    Rate: £60.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage, Bolton or Bristol depending on your preference Hybrid / Remote working: 3-4 days onsite needed. Will be 5 days onsite to begin with due to training needs Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella)...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 05, 2026  
Electronics Design Engineer
World Class Defence Organisation based in Stevenage (the role can be a split of working Onsite and Working From Home) is currently looking to recruit a number of Electronics Design Engineer subcontractors on an initial 12 month contract.    Electronic Design Engineers with excellent skills in Analogue Design or Digital Design or Power Design or FPGA are sought after.    Job Title: Electronics Design Engineer Rate: £58 per hour Overtime Rate: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: This role will involve some remote working opportunities Contract: 37 Hours per week Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)   Electronics Design Engineer Job Description: The Electronic Engineering function is a friendly and supportive environment. Within the function, you will be working with other engineers who have a collective wealth of...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 23, 2026  
Mechanical Design Engineer
World Class Defence Organisation is currently looking to recruit a Mechanical Design Engineer subcontractors on an initial 6 month contract. This role would suit a Mechanical Design Engineer who comes from a strong Defence or Aerospace background has strong Creo / PRO-E skills.         Job Title:  Mechanical Design Engineer Rate: £50.00 per hour Location: Stevenage or Bristol – depending on your preference Hybrid / Remote working: 4 days a week likely onsite (likely could be lower on a week by week basis; depending on work). 1 day remote. (flexible on start and finish time). A compressed 4 day week (Monday to Thursday) a possibility. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Mechanical Design Engineer Job Description: An opportunity to become part of Europe’s No. 1 Missile Systems Designer, as a...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 16, 2026  
Principal Thermal Engineer
World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit a Principal Thermal Engineer Subcontractor on an initial 12 month contract.   Hourly Rate: £50.00  Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: The role will likely be onsite 3 days per week. Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage onsite interview   Principal Thermal Engineer Job Description: The Mechanical Analysis Group are looking for a Principal Thermal Engineer to join its team in Stevenage. The group consists of over 30 engineers working across a wide spectrum of cutting-edge military systems. Working for an internationally recognised company, you will play a critical role in ensuring that products deliver the necessary performance against key...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 15, 2026  
V&V Systems Engineering Specialist
World Class Defence Organisation is currently looking to recruit a Verification and Validation Systems Engineering Specialist subcontractor on an initial 12 month contract.  Rate: £85.00 per hour Overtime Rate: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Location: Stevenage or Bristol (depending on your preference) Hybrid / Remote working: The role will be a hybrid role of on average 2 days per week onsite Contract: 37 Hours per week Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) V&V Systems Engineering Specialist Job Description: The Test & Evaluation team are looking for a V&V Systems Engineering Specialist to operate with a high-level of technical responsibility for the entire lifecycle of our product, ranging from design and development to qualification and deployment. A specialist will bridge the gap between design and production, ensuring that complex,...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 07, 2026  
Systems Engineer Manager
World Class Defence Organisation is currently looking to recruit a Head of FCAS Systems Design Co-Ordination ( Systems Engineer Manager ) subcontractor on an initial 6 month contract.    This position would suit a candite from the Defence / Aerospace industries and from a Systems Engineering Management background.   Rate: £80.00 per hour Location: Bristol, Stevenage or Bolton, depending on your preference.  Hybrid / Remote working: Hybrid, 3 days per week onsite (the department can offer a compressed 4 day week of Monday to Thursday) Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Interview process: 1 stage video interview Head of FCAS Systems Design Co-Ordination Job Description:   FCAS is one of the largest, most exciting and challenging programmes within Defence – to design and deliver a Future...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 01, 2026  
Test Development Engineer
World Class Defence Organisation is currently looking to recruit a Test Development Engineer on an initial 6 month contract.  The role will be a hybrid position of 50 / 50 time spent onsite.   Rate: £50.00 per hour Location: Stevenage Hybrid / Remote working: The role will be a hybrid position of 50 / 50 time spent onsite Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)   Test Development Engineer Job Description: The Test Equipment Hardware Design Capability group is a function home to the engineers working as part of the Test Equipment Centre of Excellence (TE CofEx), within Electronic Engineering (EE) Directorate. The EE Directorate is part of the wider Operations Directorate and forms part of Greater Engineering (Engineering, Operations and Programmes Directorate). Prepare specifications & develop...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
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